Spinning frame



March 4 1924.

R. E. NAUMBURG 5N TOR lllllll L atented ar. 4, 1924.

v J FH E.

ROBERT E. -NAU MBURG, OF WINCHESTER, MASSACHUSETTS, ASSIGNOR TO SACO-LOWELL SHOPS, OF BOSTON, MASSACHUSETTS, A CORPORATION 01F MASSA-cnusn'rrs.

Application filed July 5,

specification.

tioned.

This invention relates to the drawing mechanisms of spinning frames,roving frames, and like machines, and is especially concerned withmechanisms for weighting the drawing rolls.

It has usuallybeen customary heretofore to weight the upper rolls ofspinning frames through the use of saddles, the pressure beingtransmitted to the saddles from springs or weights usuallyacting-through evers. With a view to simplifying such mechanisms andavoiding the variations in pressure which necessarily attend their use,it has been proposed heretofore to make the upper rolls relatively heavyso that they will be self-weighting. This arrangement 1s usuallysatisfactory for the middle and back rolls. Additional weight, however,is usually required on the front roll and such weight is applied bymeans of a heavy cloth covered roll which bears directly on the frontroll and performs the doublefunction of applying pressure to it andclearing it or removing lint from it. This combined ressure and clearingroll must be cleaned at lntervals', and the fact that this roll is veryheavy is a great handicap in performing the cleaning operation. It isthe chief object of the present invention, therefore, to devise aweighting mechanism which, while having substantially the simplicity andother advantages of the construction just described, will also avoid,the objection above men- The nature of the invention will be readilyunderstood from the following description when read in connection withthe accompany drawings, and the novel features will e particularlypointed out in the appended claims.

In the accompanying drawings,

Figure 1 is a plan view of a portion of a spinni frame constructed inaccordance with this invention; and

Fig. 2 is a cross sectional view on the line 22, Fig. 1. i

I In the construction shown the stand or srnmms FRAME.

1923. Serial No. 649,480.

frame 2, the front upper and lower drawing rolls 3 and 4, theintermediate rolls 5 and 6, and the rear rolls 7 and 8, are allconstructed, arranged, and operated in the usual manner, no change fromthe standard. practice bemg made except in the brackets that hold theupper roll 3 in place. Resting on the upper front roll' 3 is a clearerroll 10 on which, in turn, rests a heavy weighting or pressure roll 12.These rolls have reduced ends or stub shafts 14 and 15, respectively,projecting therefrom, which are guided 1n vertical slots 16-16, formedin brackets 1717 at opposite ends of the rolls. Each' bracket 17 has ashank 18 which is adjustably secured by means. of a bolt 20 to one ofthe top roll brackets 19.

The clearer" roll 10 may consist either of a Wooden or metal rollcovered with felt 11 or cloth having suitable characteristics, and themass of the roll 12 together with that of the roll 10, is sufiicienttoapply the de sired degree of pressure to the upper roll 3.

Usually it is feasible todivide the weight about equally between therolls 10 and '12, but under some circumstances it is preferable to makethe clearer roll 10 relatively light and the weighting roll 12comparatively heavy. 4

When the clearer roll" 10 is to be cleaned, the Weighting roll 12 islifted out of the slots 16 and its shafts 1515 are rested in notches22-22, formed in the brackets 17-- '17. The clearer roll may then beremoved and cleaned. If desired, the bracket 17 may be extended andadditional notches formed in them to receive the clearer roll 10 when itis not in use.

It will now be understood that this invention provides a very simplemeans for weighting and clearing the upper of a pair of drawing rolls,and that it avoids the necessity of using a heavy clearing roll.

lVhile I have herein shown and described the best embodiment of myinvention that I have so far devised, I do not wish to be limited to theexact details of the construction shown. I

Having thus described my invention, what I desire to claim as new is:

1. In a mechanism of the' character described, the combination with uper and lower drawing rolls, of a clearer r0 1 bearing on the upperdrawing roll, a weighting roll bearing on said clearer roll, and meansfor holding said weighting and clearer rolls in their operativepositions.

2. In amechanism of the character described, the combination with adrawing 6 frame including upper and lower drawing rolls, of a clearerroll resting on the upper drawing roll, a weighting roll resting on saidclearer roll, and brackets at opposite ends of said rolls having slotstherein to receive extensions projecting from the ends of 1 said clearerand weighting rolls to hold them in their operative positions.

ROBERT E. NAUMBURG.

